Batman incorrectly states that one of the most famous silent movies is "The Great Train Hold-Up." The correct title is "The Great Train Robbery." The film was made in 1903.
The Riddler's henchman films the robbery at the bakery from only 3 or 4 different camera angles using a hand-cranked silent movie camera mounted on a tripod, but when the edited film footage of the robbery is later shown to Mr. Van Jones, it consists of multiple camera angles, which could not possibly have been filmed by the static silent movie camera, which would have had to be repositioned for each separate "shot" in the sequence.